Linked Questions

10
votes
6answers
4k views

Guess a number between 1 to 27 with 3 Yes/No/Maybe questions [duplicate]

Your best friend (Bob) comes to you with this problem. The Problem His teacher (Mr. Sam) will ask Bob to work out a number in his head between 1 and 27. Bob has to find the correct number, by asking ...
-2
votes
4answers
422 views

What's my number? [duplicate]

I am thinking of an integer $1,2$ or $3$. You can ask me only a single question to which I can reply "Yes", "No" or "I don't know". I will be completely honest. What will you ask me to figure out what ...
1
vote
2answers
178 views

Thinking of O or 0 or O [duplicate]

I am thinking of one thing. It is either an ellipse (shape), Or, it is the letter O Or, it is the number 0 You can ask me one question and guess what the thing is. I can only answer No,or ...
26
votes
3answers
4k views

Differentiate between the numbers from 1 to 5 with one single yes/no question

This question requires a bit of logical distortion to get the information required to answer the question. However, I've never seen it asked before what would happen if more modes of question ...
7
votes
8answers
1k views

Thinking of a shape

This is on a similar thought process as a 2 year old puzzle on this site: You have one question to tell whether the number I'm thinking of is 1, 2, or 3 I am thinking of a shape. It is ...
3
votes
15answers
9k views

Three doors, one question

A prisoner wakes up in an empty room (being seated on the floor against the wall). There are three solid doors on three of the room's walls: one to his left, one in the middle in front of him and one ...
7
votes
3answers
780 views

Gaby and Jack's Number Guessing Game

Gaby, a good mathematician, thinks of a whole number between 1 and 100 inclusive. What is the least number of questions Jack needs to ask her, and what questions should those be, if he is to work out ...
3
votes
4answers
297 views

Classic 2 Guards But With 3 Doors Instead

So the rules are almost the same : You get to ask just one question to whichever guard you want to (just 1 guard; asking both guards is not allowed) There are 2 guards, one tells the truth and ...
0
votes
2answers
432 views

Is there probability based Knight-Knave puzzles?

Have you seen Knight-Knave puzzles based on probability rather then facts? For example a puzzle with condition like this: Knight tells the answer, probability to which according to his knowledge is ...
-1
votes
6answers
252 views

Guessing among 3 possibilities with a single question - can this be done with letters as well as numbers?

This is an open question to all. I have seen a few " I am thinking of a number/s-- can you guess by asking one question to which I can only answer Yes, No or may be" puzzles which are interesting ...